Thank you for the in-depth feedback! I agree with your improvements / feature suggestions, most of this game's flaws were probably from originally being just a weekend game-jam game, but even then this version atleast is a lot better than the original (eg the original had no movement highlight, AI, commanders, etc.)
I was thinking of trying to make a more standard Advance Wars-like game (with grounded units) at some point, especially now that I have ground units working in my other game Doceana Quest (which I saw you've played). The asset maker (Kenney) released some assets specifically for that sometime last year, so I just need the free time to make it. But also I like making different genres, so don't hold your breath for it to release soon!